ST. PAUL  (AP) - Minnesota Revenue Commissioner Myron Frans says his agency is fast approaching an internal deadline for alerting tax preparers and software vendors of new tax breaks that filers might qualify for this year.

He delivered a warning Tuesday because lawmakers haven't passed a tax relief measure with extra deductions and exemptions that can be claimed on 2013 taxes. An estimated 1.1 million filers will submit returns between April 1 and April 15.

Frans told The Associated Press that if a bill isn't enacted by this week it will be difficult to assure hundreds of thousands of people of their qualifying credits. Some people would have to file amended returns if they want the money.

The House has approved a tax measure but is waiting on a matching Senate bill.